Spiderbot, a small French company has enjoyed popularity amongst private, academic and business customers with their current model of the SpiderBot Delta 3D printer. This printer can work with ABS en PLA materials and has a printing capability of 18 cm wide by 18 cm tall. It’s success is largely thanks to innovations to their original extrusion system. For while most printers include an extruder with six attachment points, their SpiderBot Delta on has three, thanks to their TSS system.
This system, short for Three Sphere System, consists of a combination of three spherical magnets and six carbon tubes that move the extrusion head with great precision. As two tubes are attached to one magnet, the support plate doesn’t tilt or wobble. Not only does this system allow for perfect positioning of the extrusion head, the magnetic connection can also be easily broken by applying the right amount of force, allowing for easy maintenance.
Now, Spiderbot is aiming to build a printer that transfers this effective method to a double extrusion system. And after almost a year of developing, designing and testing, numerous mishaps and 7 prototypes, they have settled for a particular system of rotating nozzles. This design aims to avoid any contact between the nozzles and the printed filament, even when they are rotating and switching positions. While some testing is still on-going, the innovative couple are confident that they will be able to release their latest model before the end of the year; the beta tests are already planned.
What is the new Innovation?
As explained by Spiderbot – “Important improvements have been made compared to a standard dual head and the earlier shown design. We discovered that the second head often touched the object when printing and even if you retract the material of the inactive nozzle, there is often a small amount of material on the nozzle tip that can leave traces, to prevent this, a radical design change was required, we came up with a completely new dual head with rotating support and inclinated nozzles, which will avoid the unused nozzle hitting the object during printing.”
So effectively, when head #1 is printing material , the second head is rotated away from the print area and can’t damage or mark the object and vice versa, when head #2 is printing support material, head#1 will be rotated away.